Edit: This thread isn't about the Mavs loss.
And I'm not saying Pop doesn't want to win, it just not as important. He doesn't have the same drive and his coaching style over recent years reflects that. He really doesn't even want to be on the bench anymore, but got pulled back in by Aldridge, and as others have mentioned, probably to recruit for Team USA.
But he's become more shtick, which is lazy, than coaching.